The Securities and Exchange Commission closed Zeek Rewards in August 2012. Paul Burks agreed to pay a $4 million penalty.

WFMY wanted to know why no criminal charges have been filed against Burks, the mastermind behind the largest Ponzi scheme in U.S. history.

Criminal charges can only be filed by the U.S. Attorney's Office. WFMY News 2 talked to the Chief Criminal Assistant at the Charlotte office who told us they don't comment on whether or not they're investigating a situation because it could interfere.